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-rw-r--r--lib/mnesia/src/mnesia.erl5
-rw-r--r--lib/mnesia/src/mnesia_controller.erl26
-rw-r--r--lib/mnesia/src/mnesia_dumper.erl8
-rw-r--r--lib/mnesia/src/mnesia_locker.erl48
-rw-r--r--lib/mnesia/src/mnesia_schema.erl38
5 files changed, 96 insertions, 29 deletions
diff --git a/lib/mnesia/src/mnesia.erl b/lib/mnesia/src/mnesia.erl
index 43953f9ad4..980a9c6213 100644
--- a/lib/mnesia/src/mnesia.erl
+++ b/lib/mnesia/src/mnesia.erl
@@ -93,7 +93,7 @@
add_table_copy/3, del_table_copy/2, move_table_copy/3,
add_table_index/2, del_table_index/2,
transform_table/3, transform_table/4,
- change_table_copy_type/3,
+ change_table_copy_type/3, change_table_majority/2,
read_table_property/2, write_table_property/2, delete_table_property/2,
change_table_frag/2,
clear_table/1, clear_table/4,
@@ -2461,6 +2461,9 @@ change_table_access_mode(T, Access) ->
change_table_load_order(T, O) ->
mnesia_schema:change_table_load_order(T, O).
+change_table_majority(T, M) ->
+ mnesia_schema:change_table_majority(T, M).
+
set_master_nodes(Nodes) when is_list(Nodes) ->
UseDir = system_info(use_dir),
IsRunning = system_info(is_running),
diff --git a/lib/mnesia/src/mnesia_controller.erl b/lib/mnesia/src/mnesia_controller.erl
index 0254769758..d4b2c7b5cc 100644
--- a/lib/mnesia/src/mnesia_controller.erl
+++ b/lib/mnesia/src/mnesia_controller.erl
@@ -72,6 +72,7 @@
add_active_replica/4,
update/1,
change_table_access_mode/1,
+ change_table_majority/1,
del_active_replica/2,
wait_for_tables/2,
get_network_copy/2,
@@ -690,7 +691,8 @@ handle_call({update_where_to_write, [add, Tab, AddNode], _From}, _Dummy, State)
case lists:member(AddNode, Current) and
(State#state.schema_is_merged == true) of
true ->
- mnesia_lib:add_lsort({Tab, where_to_write}, AddNode);
+ mnesia_lib:add_lsort({Tab, where_to_write}, AddNode),
+ update_where_to_wlock(Tab);
false ->
ignore
end,
@@ -1690,6 +1692,8 @@ add_active_replica(Tab, Node, Storage, AccessMode) ->
set(Var, mark_blocked_tab(Blocked, Del)),
mnesia_lib:del({Tab, where_to_write}, Node)
end,
+
+ update_where_to_wlock(Tab),
add({Tab, active_replicas}, Node).
del_active_replica(Tab, Node) ->
@@ -1699,7 +1703,8 @@ del_active_replica(Tab, Node) ->
New = lists:sort(Del),
set(Var, mark_blocked_tab(Blocked, New)), % where_to_commit
mnesia_lib:del({Tab, active_replicas}, Node),
- mnesia_lib:del({Tab, where_to_write}, Node).
+ mnesia_lib:del({Tab, where_to_write}, Node),
+ update_where_to_wlock(Tab).
change_table_access_mode(Cs) ->
W = fun() ->
@@ -1708,7 +1713,22 @@ change_table_access_mode(Cs) ->
val({Tab, active_replicas}))
end,
update(W).
-
+
+change_table_majority(Cs) ->
+ W = fun() ->
+ Tab = Cs#cstruct.name,
+ set({Tab, majority}, Cs#cstruct.majority),
+ update_where_to_wlock(Tab)
+ end,
+ update(W).
+
+update_where_to_wlock(Tab) ->
+ WNodes = val({Tab, where_to_write}),
+ Majority = case catch val({Tab, majority}) of
+ true -> true;
+ _ -> false
+ end,
+ set({Tab, where_to_wlock}, {WNodes, Majority}).
%% node To now has tab loaded, but this must be undone
%% This code is rpc:call'ed from the tab_copier process
diff --git a/lib/mnesia/src/mnesia_dumper.erl b/lib/mnesia/src/mnesia_dumper.erl
index 644133cf5d..9a0a2c4dcc 100644
--- a/lib/mnesia/src/mnesia_dumper.erl
+++ b/lib/mnesia/src/mnesia_dumper.erl
@@ -896,6 +896,14 @@ insert_op(Tid, _, {op, change_table_access_mode,TabDef, _OldAccess, _Access}, In
end,
insert_cstruct(Tid, Cs, true, InPlace, InitBy);
+insert_op(Tid, _, {op, change_table_majority,TabDef, _OldAccess, _Access}, InPlace, InitBy) ->
+ Cs = mnesia_schema:list2cs(TabDef),
+ case InitBy of
+ startup -> ignore;
+ _ -> mnesia_controller:change_table_majority(Cs)
+ end,
+ insert_cstruct(Tid, Cs, true, InPlace, InitBy);
+
insert_op(Tid, _, {op, change_table_load_order, TabDef, _OldLevel, _Level}, InPlace, InitBy) ->
Cs = mnesia_schema:list2cs(TabDef),
insert_cstruct(Tid, Cs, true, InPlace, InitBy);
diff --git a/lib/mnesia/src/mnesia_locker.erl b/lib/mnesia/src/mnesia_locker.erl
index 635668ff59..0492d794f3 100644
--- a/lib/mnesia/src/mnesia_locker.erl
+++ b/lib/mnesia/src/mnesia_locker.erl
@@ -657,17 +657,17 @@ rwlock(Tid, Store, Oid) ->
Lock = write,
case need_lock(Store, Tab, Key, Lock) of
yes ->
- Ns = w_nodes(Tab),
- check_majority(Tab, Ns),
+ {Ns, Majority} = w_nodes(Tab),
+ check_majority(Majority, Tab, Ns),
Res = get_rwlocks_on_nodes(Ns, rwlock, Node, Store, Tid, Oid),
?ets_insert(Store, {{locks, Tab, Key}, Lock}),
Res;
no ->
if
Key == ?ALL ->
- w_nodes(Tab);
+ element(2, w_nodes(Tab));
Tab == ?GLOBAL ->
- w_nodes(Tab);
+ element(2, w_nodes(Tab));
true ->
dirty_rpc(Node, Tab, Key, Lock)
end
@@ -679,9 +679,8 @@ rwlock(Tid, Store, Oid) ->
%% in the local store under the key == nodes
w_nodes(Tab) ->
- Nodes = ?catch_val({Tab, where_to_write}),
- case Nodes of
- [_ | _] -> Nodes;
+ case ?catch_val({Tab, where_to_wlock}) of
+ {[_ | _], _} = Where -> Where;
_ -> mnesia:abort({no_exists, Tab})
end.
@@ -733,8 +732,8 @@ sticky_lock(Tid, Store, {Tab, Key} = Oid, Lock) ->
end.
do_sticky_lock(Tid, Store, {Tab, Key} = Oid, Lock) ->
- WNodes = w_nodes(Tab),
- sticky_check_majority(Lock, Tab, WNodes),
+ {WNodes, Majority} = w_nodes(Tab),
+ sticky_check_majority(Lock, Tab, Majority, WNodes),
?MODULE ! {self(), {test_set_sticky, Tid, Oid, Lock}},
N = node(),
receive
@@ -764,20 +763,15 @@ do_sticky_lock(Tid, Store, {Tab, Key} = Oid, Lock) ->
dirty_sticky_lock(Tab, Key, [N], Lock)
end.
-sticky_check_majority(read, _, _) ->
- ok;
-sticky_check_majority(write, Tab, WNodes) ->
- case ?catch_val({Tab, majority}) of
+sticky_check_majority(W, Tab, true, WNodes) when W==write; W==read_write ->
+ case mnesia_lib:have_majority(Tab, WNodes) of
true ->
- case mnesia_lib:have_majority(Tab, WNodes) of
- true ->
- ok;
- false ->
- mnesia:abort({no_majority, Tab})
- end;
- _ ->
- ok
- end.
+ ok;
+ false ->
+ mnesia:abort({no_majority, Tab})
+ end;
+sticky_check_majority(_, _, _, _) ->
+ ok.
not_stuck(Tid, Store, Tab, _Key, Oid, _Lock, N) ->
rlock(Tid, Store, {Tab, ?ALL}), %% needed?
@@ -821,15 +815,19 @@ wlock(Tid, Store, Oid, CheckMajority) ->
{Tab, Key} = Oid,
case need_lock(Store, Tab, Key, write) of
yes ->
- Ns = w_nodes(Tab),
- check_majority(CheckMajority, Tab, Ns),
+ {Ns, Majority} = w_nodes(Tab),
+ if CheckMajority ->
+ check_majority(Majority, Tab, Ns);
+ true ->
+ ignore
+ end,
Op = {self(), {write, Tid, Oid}},
?ets_insert(Store, {{locks, Tab, Key}, write}),
get_wlocks_on_nodes(Ns, Ns, Store, Op, Oid);
no when Key /= ?ALL, Tab /= ?GLOBAL ->
[];
no ->
- w_nodes(Tab)
+ element(2, w_nodes(Tab))
end.
wlock_table(Tid, Store, Tab) ->
diff --git a/lib/mnesia/src/mnesia_schema.erl b/lib/mnesia/src/mnesia_schema.erl
index b3f06322d9..360da8a17d 100644
--- a/lib/mnesia/src/mnesia_schema.erl
+++ b/lib/mnesia/src/mnesia_schema.erl
@@ -37,6 +37,7 @@
change_table_copy_type/3,
change_table_access_mode/2,
change_table_load_order/2,
+ change_table_majority/2,
change_table_frag/2,
clear_table/1,
create_table/1,
@@ -1508,6 +1509,43 @@ make_change_table_load_order(Tab, LoadOrder) ->
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+change_table_majority(Tab, Majority) when is_boolean(Majority) ->
+ schema_transaction(fun() -> do_change_table_majority(Tab, Majority) end).
+
+do_change_table_majority(schema, _Majority) ->
+ mnesia:abort({bad_type, schema});
+do_change_table_majority(Tab, Majority) ->
+ TidTs = get_tid_ts_and_lock(schema, write),
+ get_tid_ts_and_lock(Tab, none),
+ insert_schema_ops(TidTs, make_change_table_majority(Tab, Majority)).
+
+make_change_table_majority(Tab, Majority) ->
+ ensure_writable(schema),
+ Cs = incr_version(val({Tab, cstruct})),
+ ensure_active(Cs),
+ OldMajority = Cs#cstruct.majority,
+ Cs2 = Cs#cstruct{majority = Majority},
+ FragOps = case lists:keyfind(base_table, 1, Cs#cstruct.frag_properties) of
+ {_, Tab} ->
+ FragNames = mnesia_frag:frag_names(Tab) -- [Tab],
+ lists:map(
+ fun(T) ->
+ get_tid_ts_and_lock(Tab, none),
+ CsT = incr_version(val({T, cstruct})),
+ ensure_active(CsT),
+ CsT2 = CsT#cstruct{majority = Majority},
+ verify_cstruct(CsT2),
+ {op, change_table_majority, cs2list(CsT2),
+ OldMajority, Majority}
+ end, FragNames);
+ false -> [];
+ {_, _} -> mnesia:abort({bad_type, Tab})
+ end,
+ verify_cstruct(Cs2),
+ [{op, change_table_majority, cs2list(Cs2), OldMajority, Majority} | FragOps].
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
write_table_property(Tab, Prop) when is_tuple(Prop), size(Prop) >= 1 ->
schema_transaction(fun() -> do_write_table_property(Tab, Prop) end);
write_table_property(Tab, Prop) ->
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-26 10:34:37 +0000